Blindsight

(1991)(The first book in the Jack Stapleton / Laurie Montgomery series)A novel by Robin Cook

When a series of unrelated "yuppie" deaths by cocaine overdose are reported to the Medical Examiner's office, Dr Engler's curiosity is aroused. As the deceased's friends swear that their loved ones weren't involved with drugs, Dr Engler's curiosity intensifies. By the author of "Coma".